A Recursive Process

Mandelbrot

September 1, 2011, 12:00 am

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Password Strength

August 30, 2011, 12:00 am

 

To add to this excellent xkcd comic, the following site also exists : Password Haystacks.

Which is a stronger password?

T@+t0O

or

dudewhatdoesmytattoosay

(Click to find out, I’ll wait).

Pretty sweet indeed. What a difference.

Anyways, the reason I’m linking this stuff is th...

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Hurricane Irene – Logarithmic Spiral?

August 28, 2011, 12:00 am

Does Hurricane Irene fit a logarithmic spiral?

I made a Geogebra applet to see if it does. Enjoy.

Parametric equation:
x=b*cos(t)*e^{at}
y=b*sin(t)*e^{at}
-11.7\le t \le 3.4

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Transport $12 billion of gold #anyqs

August 24, 2011, 12:00 am

From Bloomberg:

Venezuelan President Hugo Chavez ordered the central bank to repatriate $11 billion of gold reserves held in developed nations’ institutions such as the Bank of England as prices for the metal rise to a record.

Venezuela, which holds 211 tons of its 365 tons of gold res...

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Python Challenge

August 24, 2011, 12:00 am

 

Python Challenge is a “programming riddle” on the internet.

What is the Python Challenge?
The Python Challenge is a set of riddles that require a little bit of Python programming to be solved. The solutions are entered by changing the address of the page (URL). You get used to the idea pre...

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Changes to Intro to Computer Programming

August 23, 2011, 12:00 am

This will be my third year teaching Introduction to Computer Programming. The first year I had 15 students which was a good showing, but last year I only had 5 students. It turned out to be a scheduling issue, but I was still worried about the health of the course, and whether or not it would contin...

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Why Hello…

August 20, 2011, 12:00 am

I’m updating the hosting of the blog (among other things), so please stay tuned. Cheers. Dan.

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Ants: Any questions?

August 6, 2011, 12:00 am

@fnoschese retweeted the following stat on twitter:

https://twitter.com/#!/fnoschese/status/99615928823726080It seemed a bit low to me, so naturally I started a totally unscientific poll. Please go here and fill out at least one of the questions. The results will be posted back here in a couple of days. Thanks much.
Dan

https://spreadsheets.google...

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One Zipper Unfoldings of Polyhedra

August 4, 2011, 12:00 am

From Make.

Just discovered this fascinating little geometrical recreation at the 2011 Bridges Math Art Conference galleries. The idea is simple, and the field still fairly unexplored, from what I can tell. What interesting 3D shapes can be made by zipping up the edges of a planar shape usi...

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